Abstract
A field observation was pertormed within and above a street canyon along a route 246 in summer 1996, to investigate the characteristics of heat balance of street canyon including the effect of transportation, and also to verify the forcing effect of vertical momentum exchange due to transportation. The following results were obtained; 1) anthropogenic heat due to transportation reached more than 200 (W/m2), 2) temporal change of sensible heat was strongly affected by not only net radiation but also anthropogenic heat due to transportation, 3) latent heat was not negligible, 4) scintillation meter was available for measuring the sensible heat from street canyon, and 5) transportation gave the horizontal momentum to the surrounding atmosphere in the same direction as the traffic, so that the wind velocity and the vertical momentum exchange were modified by transportation especially in rush hours.
